G1JAK
01-13-2007, 07:10 PM
Hi World,
Can anyone supply wiring information to connect a new Yaesu MD100-A8X to an old FT480R.
I use the 480 for SSB satellite uplink due to the quality of the audio so a decent base mike will improve it even more.
Thanks in advance,
John.
g1jak@itologysystems.com
www.g1jak.com
Previous QRZ Q&A information (database search)
The Yaesu MD-100A8X desk mic features a cardioid dynamic mic element and UP/DOWN tuning (on compatible Yaesu transceivers). There is a scan switch, a switch for PTT (push to talk) and also a lock feature. On the bottom of the mic base there is a High Emphasis switch and a Low Cut Switch. The mic cable terminates to a Yaesu 8 pin mic plug (jacks and cabling are provided with new microphoens for RJ-45 or round 8-pin Foster plugs). This is a 500 ohm mic.
MODS.DK has the manual and schematic for this microphone:
http://www.dlmods.dk/manuals3443h5/yaesu/MD-100A8X_Manual@ddd.pdf
http://www.mods.dk/index.php?ListManuals=yaesu
This mic works well with the FT-747, FT-757GXII, FT-840, FT-847, FT-857, FT-890, FT-897, FT-990, FT-1000 and FT-1000MPV. It does not work on some older Yaesu transceivers such as the FT-736R. Note that the FT-757GXII was listed, not the plain FT-757GX or Mk1
http://www.universal-radio.com/catalog/mics/0287.html
27 reviews
http://www.eham.net/reviews/detail/1151
MODS.DK or your FT-480R manual can help you with specific microphone connector pin assignments.
MODS.DK has modifcations for usage with the FT-990
http://www.mods.dk/index.php?ModelId=105&RadioRec=yaesu (http://www.mods.dk/index.php?ModelId=105&RadioRec=yaesu)
w9gb
==========
FYI from KN4LF
Many of us who own the excellent MD-100a8x desk microphone are painfully aware that we can not use
the built in audio filtering on many of Yaesu's rigs. The MD-100a8x was designed to be used with the popular FT-1000MP series and also the FT-900 and I think the FT-920. Rigs such as the FT-1000/D, FT-990, FT-890, FT-840, FT-757GXII, FT-747GX and others will not work with the internal active filtering of the mic, as these rigs do not supply the 5 volts output on the 8 pin male microphone plug necessary to power the mic.
In the past Yaesu made available a technical bulletin that described a modification to allow the internal audio filtering of the mic to be used with most of it's modern transceivers. #Unfortunately though the mod was complex and required physical changes to the rig and microphone that could be irreversible.
I have designed a modification kit that overcomes the invasive and complex changes to the rig and microphone, to allow use of the internal audio filtering. The mod kit comes with explicit directions, photographs and schematics, much like a Heath kit. The kit building level experience needed is just above beginner, requiring some simple soldering and the cutting of one easily restorable circuit board trace inside the mic.
The modification kit costs $29.95 plus actual USPS shipping costs. For an additional $10.00 I will build the kit and all you have to do is cut the one circuit board trace inside the mic.
For more information and questions email me at kn4lf at tampabay.rr.com . Later today I will place the mic mod on eBay and will post it back on the Yaesu email reflectors. 73,
Thomas F. Giella, KN4LF
Plant City, FL, USA
EL87WX
